Adjustable reaming device



April 21, 1925. 1,535,027

A. A. MORRISON ADJUSTABLE REAMING DEVICE Filed July 31, 1920 /7- i Marni-son fiIVENTOR ATTORNEY wrmrssest Patented Apr. 21, 1925.

UNITED STATES ARTIE A. MORRISON, OF WILLIAMSPORT, PENNSYLVANIA.

ADJUSTABLE REAMING DEVICE.

Application filed July 31, 1920.

T all rr/aom a may concern:

Be it known that I, ARTIE A. MonnIsoN, a citizen of the United States, residing at lVilliamsport, in the county of Lycoming and State of Pennsylvania, have invented new and useful Improvements in Adjustable Reaming Devices, of which the following is a specification.

This invention relates to reamers and has ten an object the provision of a tool for reaming holes, which is capable of adjustment for holes of different diameters and further capable of expansion.

Another object of the invention is the provision of a reamer in which the blades are removable, so as to permit of their use in connection with reaming tools of different diameters and to permit of the substitution of new blades when necessary.

Other objects and advantages of the invention will appear as the following description is read in connection with the accompanying drawings.

In the drawings:

Figure 1 is a side elevation of a reaming tool embodying the present invention.

Figure 2 is a central longitudinal sectional view of the same.

Figure 3 is a transverse section through one end of the reamcr- Figure 4 is a perspective view of one of the end blocks.

Figure 5 is a similar view of the other end block.

Figure 6 is a detailed perspective view of one of the cutters.

Referring in detail to the drawings, wherein like characters of reference denote corresponding parts, the improved reamer comprises a pair of block 10 and 11, both of which are of cylindrical formation. These blocks are designed to be connected through the medium of cutter blades 12, the latter having cutting edges 13 and offset shanks 14 and 15.

The shanks lat and 15 are receivable within grooves 16 and 17 provided respectively in the blocks 10 and 11. Both of these blocks have their grooves extending for approximately one-halt their lengths, the remaining portions of the blocks being exteriorly threaded for the reception of inte- Serial No. 400,345.

riorly threaded sleeves. These sleeves are likewise tht eaded "for only a portion of their lengths, the remaining portion of the bores of the sleeves being smooth and adapted to be positioned over the grooves 16 and 17 of the blocks 10 and 11 for the purpose of holding the shanks of the blades 12 in posi tion therein.

The blades 12 have their inner edges inclined for engagement by a cone-shaped head 19 which is carried by a shank 19. This shank has a threaded engagement with the block 10 and is adjustable longitudinally therethrough.

It will be seen from the foregoing description and the accompanying drawings, that the invention provides an extremely simple and etlicient reaming device, which is capable of expansion and adjustment with holes of different diameters. It will be further ap parent that the invention provides an extremely inexpensive article, and that a single tool may be used for different sized holes, by the substitution of blocks of different diameters, the same cutters being associated with any of these blocks. It will be further seen that in the event of damage to one of the cutters, a new one may be substituted without the loss of the entire tool. The inven tion is susceptible of various changes in its formation, proportion and minor details of construction and the right is herein reserved to make all changes which properly fall within the scope of the appended claim.

Having described the invention, what is claimed is:

An adjustable reamer comprising a pair of oppositely located blocks having longitudinally disposed grooves in their peripheries, blades, oppositely extending aligned offset slightly flexible shanks at the ends of the blades, said shanks being located and slid able within the grooves of the blocks, sleeves threadedly engaging and surrounding the blocks over the grooves to hold theblades in position, inclined inner edges for the blades, a conical head positioned between and engaging said edges and a shank carried by the head and threadedly adjustable through one of the blocks.

In testimony whereof I allix my signature.

ARTIE A. MORRISON.

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